Is it legal to discharge an airsoft gun in Milwaukee Wisconsin?

Answer 1

No. Milwaukee city ordinance below 10/2012

105-35. Discharge of Firearms. 1. POLICE PERMIT. No person shall fire or discharge any cannon, gun, fowling piece, pistol, firearm, air rifle, air gun of any description, or any instrument which impels a missile or pellet by compressed air, spring or other means, within the limits of the city; provided, however, that the chief of police may from time to time issue to an authorized person or authority a permit for a specified purpose and period of time to use, fire and discharge any of the aforesaid weapons or instruments within the limits of said city.

Answer 2

It is most likely illegal to branish a replica firearm anywhere in public. It is also unsafe. Only play at private property away from the view of the public.